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Himax Technologies, Inc. (the Parent Company only) (Details Textual) (Parent [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Parent [Member]
     
Condensed Financial Statements, Captions [Line Items]      
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax $ 43us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
$ (99)us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember
$ 8us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_ParentMember